Spindle for spinning machines



G. PIGNAL Filed July 22. 1924 Mar. 3, 1925.

' SPINDLE FOR SPINNING MACHINES Patented Mar. 3, 1925. l

UNITED STATESi PATENT QFFECE. n

GEORGES PIGNAL, OE TUEIZE, BELGIUM, assrenor. To EABRIQUE DE SOIEARTIFI- CIELLEE DE TUBIZE, SOCIETE ANONYME, or BRUSSELS, BELGIUM.

SPINDLE FCB SPINNING MACI-IINES.

Application led July 22, 1924. Serial No. 727,405.

To all whom t may concern:

Be it known that I. GEORGES PIGNAL, a citizen of the French Republic,residing at Tubize, in the Kingdom or" Belgium, have invented certainnew and useful Improvements in Spindles for Spinning Machines, oi whichthe following is a specification.

My invention relates to spindles for certain spinning machines, known asbell spindles employed in the spinning of artiiicial textile substances,for instance artificial silk as obtained from acetate of cellulose.

In these machines the spindles as they are actuallyV constructed attaingenerally a speed oi rotation of 10,000 revolutions per minute whichgives the thread a twining ot' 200 turns per meter if the speed ofproduction of the thread is not greater than mete-rs per minute. It itis desired to speed up the output to 100 meters ay minute the twiningthat can be obtained with these spindles is not more than 100 turns permeter.

One object of my invention is to allow of considerably increasing thespeed of rot-ation ot the spindles of these spinning machines in such away as to be able to effect for example a speed of 20,000 revolutionsper minute which, with an output oi' 100 meters per minute, whenspinning, allows of giving the thread the required twining of 20() turnsper minute. The two most serious obstacles to the obtention of suoliconsiderable speeds consist on the one hand in the excessive wearproduced by the friction of the spindle rotating directly on the fixedaxial rod which also serves as a guide for its reciprocating movementand on the other hand in the production of vibrations which alect allthe system.

And it is a further object of my invention to obviate the lirstinconvenience that is to say to reduce the friction of the movement otthe movable part to the minimum and also to prevent the secondinconvenience that is to say to assure suliicient Stability of the 4parts, whilst allowing the reciprocating movement of the spindle on itsaxial rod without rotation and Without exerting strain on the latter.

With these objects in view, my invention essentially consists in thespecial arrangements and combinations of parts as will be hereinafterfully described and pointed out in the appended claims.

The annexed drawing illustrates in vert-ical section a spindleconstructed in accordance with the invention.

In the drawing a indicates a bar given a vertical up and down movement.

On this bar is fixed for each spindle a sleeve l) bored to the diameterof the axial rod c which carries the bell (not illustrated). This sleeve7) slides with slight friction on the spindle c and carries the interiorraces of the ball bearings d and e of the type have ing obliquereaction. rllhe outer ball races are lixed to the bobbin carriage whichcomprises from below upwards, a cup f which contains the ball-bearing c;a pulley f/ on which the driving strap acts; a plate 7L on which the cupz' containing the ball bearing CZ is screwed; a gyroscopic fly-wheel 7cintegral with the cup i and a sleeve carrying the bobbin and which hassome tenths of a millimeter play on the axial rod c so as not to touchit.

At the time of operation the pulley g being put in rotation by thedriving strap turns on the ball bearings al and e and drives thegyroscopic ily-wheel and the sleeve j carrying the bobbin. f

The whole of this device the stability of which is particularly greatowing to the action of the gyroscopic lyewheel 7u can lievertheless bedisplaced on the fixed axial rod c under the action ot' the bar awithout any direct contact being produced between the rotary device andthe rod.

Experience has shown that, owing to this construction the considerablespeed indi cated above and corresponding to a twining and output muchhigher than could be eected hitherto by mechanism of this character canbe realized.

What I claim is:

l. In a. spindle ot the character described in combination, a ixed axialrod, a sleeve adapted to slide on the said rod, means whereby an up anddown movement is com muiiicated to the said sleeve, interior ballbearing races carried by said sleeve, balls mounted in the said races, abobbin carriage supported by the said balls and a gyroscopic fly wheelcooperating with the said bobbin carriage.

2. In a spindle of the character described, in combination, a xed axialrod, a sleeve adapted to slide on the Said rod with Slight friction,means whereby an up and down movement is communicated to the saidsleeve, interior ball bearing, races carried bysaid sleeve, ballsmounted in the said races, a pulley supported by the said balls, agyroseopic fly wheel mounted on the said pulley and a bobbin-sleevemounted on the fly-Wheel and surrounding Wit-li play the xed axial rod.

3. In aspindle of the character described in combination a fixed axialrod, a bar having an up and down movement along the said rod, a sleevemounted on the said bar and adapted to slide on the axial rod, interiorball bearing races carried by the said sleeve, balls mounted in the saidraces and a bobbin carriage comprising a cup, an outer ball race in thesaid cup, a pulley, a plate, a cup screwed on the said plate, a secondouter ball race mounted in the said cup, a gyroscopic fly Wheel integralWith the said cup and a sleeve surrounding with play the iixed axialrod.

In testimony Whereol I have a'lixed my signature in presence of t-WoWitnesses.

GEORGES PIGNAL.

Witnesses:

Jos. BOLEAU, D. MnoLsTnrN.

